%0 Journal Article
%T Inhibition of Aromatics on Ammonia-Oxidizing Activity of Sediment<br>苯取代化合物对底泥氨氧化活性的抑制作用研究
%A DONG Chun hong
%A HU Hong ying
%A WEI Dong bin
%A HUANG Xia
%A QIAN Yi
%A <br>董春宏
%A 胡洪营
%A 魏东斌
%A 黄霞
%A 钱易
%J 环境科学
%D 2004
%I 
%X The inhibition of 24 aromatics on ammonia-oxidizing activity of nitrifying bacteria in sediment was measured. The effects of the kind, number and position of substituted groups on ammonia-oxidizing activity of nitrifying bacteria were discussed. The inhibition of mono-substituted benzenes on ammonia-oxidizing activity of nitrifying bacteria were in order of -OH > -NO2 > -NH2 > -Cl > -CH3 > -H. The position of substituted groups of di-substituted benzenes also affected the inhibition, and the inhibitions of dimethylbenzenes(xylene) were in order of meta-> ortho-> para-. The increase in number of substituted group on benzene-ring enhanced the inhibition of aromatics studied in this study on nitrifying bacteria. There was a linear relationship between inhibition (IC50, mumol.L-1) of aromatics on ammonia-oxidizing activity and total electronegativity (sigma E) of aromatics: lgIC50 = 14.72 - 0.91 sigma E.
%K aromatics
%K sediment
%K inhibition
%K ammonia oxidizing activity
%K nitrification activity<br>苯取代化合物
%K 底泥
%K 氨氧化活性
%K 抑制作用
%K 硝化活性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=B709774DFF7FA9C8&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=0B39A22176CE99FB&sid=BB0EA31DB1B01173&eid=C3BF5C58156BEDF0&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=16